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Last updated on Aug 27, 2026
Upgrade or downgrade a Subscriber's Plan, and prorate the charges or credits for the difference. If you just want to switch the Subscriber to a new Plan without proration, use a Plan change instead.
See When to Credit or Charge for Plan Changes, Upgrades, or Downgrades for a scenario-by-scenario breakdown of what to credit or charge in each case.
Upgrades and downgrades are initiated from the Subscription's own Actions menu.
To upgrade or downgrade a Subscription
Open the Subscription and select Upgrade/Downgrade from the Subscription Actions.

Review the current Plan and prorated credit, if any.
Select Select Product next to the Plan you want to migrate to.

Optionally, select Include Coupons to carry over any existing coupons.
Confirm the migration.
You'll see a success message once the migration completes. Check the Subscription's Transactions tab for the credits and charges created during the migration.
Upgrading or downgrading a Subscriber's Plan credits them for the unused portion of their current Subscription toward the new one.

The prorated credit is proportional to the time remaining in the period, rounded to the nearest cent. It's $0 only if no payment was issued toward the current Plan.
Any setup fee on the current Plan is excluded from the proration calculation; it doesn't count as money already spent toward the Plan.
Advanced Billing calculates the credit using the following equation:
(Time left of recurring period / Recurring period) × Cost of a recurring period
For Preserve Period, refund handling, coupon behavior, and worked examples of how proration plays out, see Understand Upgrade and Downgrade Scenarios.
For non-prorated Plan changes instead, see Change a Subscription's Plan.
For a scenario-by-scenario breakdown of what to credit or charge, see When to Credit or Charge for Plan Changes, Upgrades, or Downgrades.
For the full list of Subscription actions, see Subscription Actions Overview.
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